【单选题】When an invention is made, the inventor has three possible courses of action open to him: he can give the invention to the whole world by publishing it, keep the idea secret, or patent it. A granted p...
A.
It is necessary for an inventor to apply for a patent before he makes his invention public.
B.
A patent holder must publicize the details of his invention when its legal period is over.
C.
one can get all the details of a patented invention from a library attached to the patent.
D.
When a patent becomes out of effect, it can be re-patented or extended if necessary.
【单选题】韭菜收割后还能再生长,是因为_______________活动的原因
【单选题】When an invention is made, the inventor has three possible courses of action open to him: he can give the invention to the world by publishing it, keep the idea secret, or patent it. A granted patent ...
A.
an approach to patents
B.
the application for patents
【单选题】韭菜收割后还能再生长,是因为_______活动的原因。
【单选题】When an invention is made, the inventor has three possible courses of action open to him: he can give the invention to the world by publishing it, keep the idea secret, or patent it. A granted patent ...
A.
an approach to patents
B.
the application for patents